/Engine/Source/Editor/SceneOutliner/Public/SceneOutlinerDragDrop.h
Populate this payload from an array of tree items
template<typename TreeType> FSceneOutlinerDragDropPayload ( const [TArray](API\Runtime\Core\Containers\TArray)< TreeType > & InDraggedItems, const [FDragDropOperation](API\Runtime\SlateCore\Input\FDragDropOperation) & InOperation )